The plastic-window frame (1) has weather-sided veneer walls (9) and hollow chamber profiles (2) that are welded with each other in corner area, where the hollow chamber profiles are made of plastic. One of the hollow chamber profiles of the window frame has a drainage opening that passes through weather-sided viewing area (6) below the window frame-folding area (4) and above the masonry-connecting area. An independent claim is also included for a window with a horizontal area.